GB1200034A - Hydraulic apparatus - Google Patents

Hydraulic apparatus

Info

Publication number
GB1200034A
GB1200034A GB4757/68A GB475768A GB1200034A GB 1200034 A GB1200034 A GB 1200034A GB 4757/68 A GB4757/68 A GB 4757/68A GB 475768 A GB475768 A GB 475768A GB 1200034 A GB1200034 A GB 1200034A
Authority
GB
United Kingdom
Prior art keywords
piston
platen
chamber
cylinder
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4757/68A
Inventor
Peter Florjanic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1200034A publication Critical patent/GB1200034A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/67—Mould opening, closing or clamping devices hydraulic
    • B29C45/6764—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement
    • B29C45/6771—Mould opening, closing or clamping devices hydraulic using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement the connection being provided within the clamping cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/204—Control means for piston speed or actuating force without external control, e.g. control valve inside the piston
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/223—Injection mold closing means utilizing variable closing pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

1,200,034. Injection moulding; presses. P. FLORJANCIC. 30 Jan., 1968 [13 Feb., 1967], No. 4757/68. Headings B5A and B5F. A movable part 11 of an injection mould on a platen 8 is closed with a stationary part 10 on a platen 2 in two stages by an hydraulically operated piston-and-cylinder 5, 1; in the first stage pressure liquid supplied at 17 to chamber 6 moves the piston and hence the platen 8, which is connected thereto by rods 9, during which movement liquid flows from chamber 7 to chamber 6 via a bore 22 in the piston. When the mould approaches the closed position a pin 28 on the platen 2 pivots a lever 26 causing a valve 23 gradually to close the bore 22 whereupon the chamber 7 is connected to exhaust, e.g. to a fluid supply reservoir, via an outlet 18 and valve 19, and the second stage is effected. The mould part 11 is retracted by hydraulic pistons 14 connected to the platen 8 by rods 15. In a modification the stem of the valve 23 extends from the rear wall of the cylinder in an adjustable manner. Alternatively, the chambers on opposite sides of the piston are interconnected by a valve arrangement comprising a cylindrical liner within the cylinder which, when the piston is in a forward position, co-operates with the piston periphery. In a further embodiment the chambers are interconnected by a valved passage in the cylinder wall. Instead of moving part of an injection mould, the hydraulic apparatus may be associated with the movable member of a press.
GB4757/68A 1967-02-13 1968-01-30 Hydraulic apparatus Expired GB1200034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT134167A AT301849B (en) 1967-02-13 1967-02-13 Pressure cylinder, in particular mold clamping device for injection molding machines

Publications (1)

Publication Number Publication Date
GB1200034A true GB1200034A (en) 1970-07-29

Family

ID=3511799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4757/68A Expired GB1200034A (en) 1967-02-13 1968-01-30 Hydraulic apparatus

Country Status (5)

Country Link
US (1) US3554087A (en)
AT (1) AT301849B (en)
CH (1) CH464451A (en)
FR (1) FR1553502A (en)
GB (1) GB1200034A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327753C3 (en) * 1973-05-30 1982-05-06 Max 7910 Neu-Ulm Mayer Pneumatic clamping device for workpieces
IT992997B (en) * 1973-08-17 1975-09-30 Bettonica L HYDRAULIC PRESS FOR THE MANUFACTURE OF CERAMIC AND SIMILAR TILES AND PLATES
US4009983A (en) * 1976-01-16 1977-03-01 Arthur William Jacobs Hydraulic mold clamping mechanism for injection molding machine
US4258609A (en) * 1977-10-11 1981-03-31 Conway John P Dual speed hydraulic piston assembly
JPS55126362A (en) * 1979-03-20 1980-09-30 Florjancic Peter Hydraulic pressure type clamping device
US4348943A (en) * 1980-04-28 1982-09-14 Hydroacoustics Inc. Hydraulic press apparatus
DE3044137C2 (en) * 1980-11-24 1985-01-31 Karl 7298 Loßburg Hehl Mold clamping unit for receiving a plastic injection mold
DE3128347A1 (en) * 1981-07-17 1983-02-03 Eugen Dipl.-Ing. 8871 Burtenbach Bühler PROCESS AND EQUIPMENT FOR THE MANUFACTURE OF MOLDINGS FROM FREE-FLOW MASS KEYWORD: "MAINTAINING THE FILLING VACUUM DURING ISOSTATIC PRESSING"
US4954074A (en) * 1988-08-04 1990-09-04 Us Molding Machinery Company Injection bladder press
US5910328A (en) * 1996-02-22 1999-06-08 Toshiba Kikai Kabushiki Kaisha Clamping apparatus for precise injection molding
US20180266169A1 (en) 2017-03-14 2018-09-20 Biofilm Ip, Llc Garage door systems and methods
WO2018170018A1 (en) 2017-03-14 2018-09-20 Biofilm Ip, Llc Garage door systems and methods
CN107855808A (en) * 2017-12-08 2018-03-30 新立行科技浙江有限公司 Cylinder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505786A (en) * 1946-07-22 1950-05-02 Bucyrus Erie Co Differential cylinder-piston assembly
US2805447A (en) * 1953-11-05 1957-09-10 Voges Fred William Safety circuit for molding machine
US2855752A (en) * 1955-10-21 1958-10-14 Brusque Rene Le Hydraulic device for controlling the feed and stop position of a machine element in cutting, sawing and slicing machines

Also Published As

Publication number Publication date
AT301849B (en) 1972-09-25
FR1553502A (en) 1969-01-10
US3554087A (en) 1971-01-12
CH464451A (en) 1968-10-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee